Community Structure and Seasonal Dynamics of Dactylogyrus Spp. (Monogenea) on the Fathead Minnow (Pimephales promelas) from the Salt Valley Watershed, Lancaster County, Nebraska

Knipes, Alaine; Janovy, John

doi:10.1645/ge-2166.1

Cited by 9 publications

(8 citation statements)

References 18 publications

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“…Dactylogyrids are common monogenean parasites with more than 900 described species (Knipes and Janovy 2009), and they may cause a serious pathogen in the aquaculture of many freshwater fish (Ogawa 2002). A variety of chemical treatments including trichlorfon (Prost and Studnicka 1966), formalin (Willomitzer 1980), mebendazole (Goven and Amend 1982), praziquantel (Schmahl and Mehlhorn 1985), and toltrazuril (Schmahl and Mehlhorn 1988) are available to control Dactylogyrus infection.…”

Section: Discussionmentioning

confidence: 99%

Anthelmintic activity of the crude extracts, fractions, and osthole from Radix angelicae pubescentis against Dactylogyrus intermedius in goldfish (Carassius auratus) in vivo

Wang

et al. 2010

Parasitol Res

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A bioassay-guided fractionation was performed to evaluate the anthelmintic activity of the crude extract fractions and osthole from Radix angelicae pubescentis against Dactylogyrus intermedius in goldfish (Carassius auratus) in vivo. Among four extracts (petroleum ether, ethyl acetate, acetone, and ethanol), only ethanol extract exhibited the best anthelmintic efficacy with 100% mortality of Dactylogyrus and no death of fish at the optimal anthelminthic concentration of 120 mg/L. Therefore, ethanol extract was subjected to column chromatography to obtain sixteen fractions. The activity was found in fraction F with 100% mortality of Dactylogyrus and no toxicity to fish at dose of 2.0 mg/L. A white crystal was isolated from fraction F and identified as osthole which exhibited the optimal activity with 100% mortality of Dactylogyrus at 1.6 mg/L had and no toxicity to fish at dose up to 6.2 mg/L. This is the first report on the isolation and identification of anthelmintic active compound from R. angelicae pubescentis against D. intermedius in goldfish (C. auratus) in vivo.

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Section: Discussionmentioning

confidence: 99%

Anthelmintic activity of the crude extracts, fractions, and osthole from Radix angelicae pubescentis against Dactylogyrus intermedius in goldfish (Carassius auratus) in vivo

Wang

et al. 2010

Parasitol Res

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“…Fish movements potentially affect the distribution and abundance of parasites in the system. Hence, along the river, parasite communities of fish may vary depending on the continuity or separation of the habitats (Janovy et al, 1997; Weichman and Janovy, 2000; Knipes and Janovy, 2009). Some studies focused on the spatial variation of parasites of riverine fish have shown that the composition of parasite communities is relatively persistent (Knipes and Janovy, 2009; Ferrari-Hoeinghaus et al, 2006; Ferreira-Sobrinho and Tavares-Dias, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Hence, along the river, parasite communities of fish may vary depending on the continuity or separation of the habitats (Janovy et al, 1997; Weichman and Janovy, 2000; Knipes and Janovy, 2009). Some studies focused on the spatial variation of parasites of riverine fish have shown that the composition of parasite communities is relatively persistent (Knipes and Janovy, 2009; Ferrari-Hoeinghaus et al, 2006; Ferreira-Sobrinho and Tavares-Dias, 2016). By contrast, other studies report considerable changes in the community structure across such a spatial gradient (Weichman and Janovy, 2000; Bellay et al, 2012; Acosta et al, 2015; Córdova and Pariselle, 2007; Espinal-Carrión and López-López, 2010).…”

Section: Introductionmentioning

confidence: 99%

Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico

Salgado‐Maldonado

Mendoza‐Franco

Caspeta‐Mandujano

et al. 2019

International Journal for Parasitology: Parasites and Wildlife

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We studied monogenean communities of 11 populations of Astyanax aeneus (Günther) separated by small geographical distances along 60 km of the Lacantún river in Chiapas, Mexico, in February and August 2012. We found 12 monogenean taxa. Amongst these, five species specialist for Astyanax were widely distributed regionally, constituting 90% of the total collected monogeneans, with one of these species dominating most component communities. The high similarities in terms of composition between the component communities (S Jaccard > 60%) as well as in terms of the abundance and composition between infracommunities (S Bray Curtis > 40%), provide empirical evidence that transmission, both between hosts at the same location and between component communities, is high and effective. No resemblance pattern was detected between locations in terms of their spatial distribution. The composition of these communities was spatially and temporally consistent over the two very different weather periods sampled. These communities were not saturated. Our analysis suggests that the potential richness of the infracommunities is proportional to the number of monogenean species available in the component community. We found aggregation in the populations and between monogenean species. Intraspecific aggregation is density dependent, suggesting that intraspecific competition for space is not a limiting factor for the development of the population. We evaluated the associations for each species pair and detected 77% negative interactions (134/177 associations), suggesting that interspecific competition plays an important role in shaping these communities. The negative correlations of abundance between pairs of species contributes to confirmation of competition. Intraspecific aggregation increased relative to interspecific aggregation with richness in the component community, facilitating coexistence of the species. Our results suggest that these are interactive communities, where monogeneans disperse efficiently from a common source, colonize patches (hosts) together, and compete with other species even at low population densities. Finally, the coexistence of these species is favored by the unpredictable recruitment and aggregated use of fragmented resources.

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“…Studies on the seasonal dynamics of populations and community structure of parasites have been conducted for several decades with many important findings (Køie, 1988;Nie and Kennedy, 1991;Boungou et al, 2008;Luo et al, 2010, Emre et al, 2015. Many of them concerned the population dynamics of congeneric species of monogeneans on the same species of host (Simková et al, 2000;Matejusová et al, 2003;Boungou et al, 2008), but only a few such studies have focused on the community dynamics of congeneric species (Knipes and Janovy, 2009;Muñoz and Randhawa, 2011) and none involved monogeneans on farmed Japanese eels. Previous studies on the parasite communities of eels mainly focused on endoparasitic helminths (Kennedy, 1993;2001;Norton et al, 2004), and most of these studies concentrated on community structure and composition (Gutiérrez, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Temperature is likely the most important abiotic factor influencing the population dynamics of monogeneans (Lambert, 1990). Many freshwater dactylogyrid monogeneans exhibit positive correlations with water temperature in either laboratory experiments (Fang et al, 2008) investigations (Knipes and Janovy, 2009). In addition, chemical treatments of fish diseases, are common measures for preventing infectious diseases of cultured fishes, may result in environmental pollution, parasite resistance and host damage (Schmahl et al, 1989;Iosifidou et al, 1997) and even impact on the dynamics of parasite populations and communities.…”

Section: Introductionmentioning

confidence: 99%

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Zhang¹,

Yan²,

Wang³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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The population and community dynamics of four monogeneans, Pseudodactylogyrus anguillae, P. bini, P. microrchis, and an unidentified Pseudodactylogyrus sp., on the gills of cultured Japanese eels, Anguilla japonica L., were investigated at two fish farms at Chaozhou, Guangdong Province, China. A total of 8,377 individual parasites were collected from sampling pond I (with more frequent chemical treatments for parasitic diseases: generally twice per month), including 338 P. anguillae, 7,388 P. bini, 491 P. microrchis and 160 Pseudodactylogyrus sp. At sampling pond II (with fewer chemical treatments for parasitic diseases: generally once during summer and winter months), 20,776 parasites were recovered, comprising 1,904 P. anguillae, 13,999 P. bini, 3,135 P. microrchis and 1,738 Pseudodactylogyrus sp. Monthly parasite community and population parameters, such as prevalence, mean abundance and species richness, varied irregularly and were not significantly correlated with water temperature at both fish farms. The infection parameters, however, exhibited a significant relationship with water temperature under indoor conditions. The diversity of monogenean communities in sampling pond II was higher than that in sampling pond I. These results may imply that the effects of water temperature exerted on the parasite population and communities were masked by human interference (drug implementation) in the fish ponds.

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Community Structure and Seasonal Dynamics of Dactylogyrus Spp. (Monogenea) on the Fathead Minnow (Pimephales promelas) from the Salt Valley Watershed, Lancaster County, Nebraska

Cited by 9 publications

References 18 publications

Anthelmintic activity of the crude extracts, fractions, and osthole from Radix angelicae pubescentis against Dactylogyrus intermedius in goldfish (Carassius auratus) in vivo

Anthelmintic activity of the crude extracts, fractions, and osthole from Radix angelicae pubescentis against Dactylogyrus intermedius in goldfish (Carassius auratus) in vivo

Aggregation and negative interactions in low-diversity and unsaturated monogenean (Platyhelminthes) communities in Astyanax aeneus (Teleostei) populations in a neotropical river of Mexico

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